VIRUS

• The Visible Integral-Field Replicable Unit Spectrograph (VIRUS)

• VIRUS-P

246 fibers arranged in a fixed pattern

1/3 fill factor

Each fiber has a 4.16 arcsec diameter on the sky.

2.82 square arcminute

• VENGA (VIRUS-P Exploration of Nearby Galaxies)

VIRUS-P maps of 30 spirals on 2.7-meter Harlan J. Smith Telescope

• HEDEX (Hobby-Eberly Telescope Dark Energy Experiment )

145 VIRUS equipped on HET

• Hobby-Eberly Telescope: 9.2m on McDonald Observatory (The University of Texas).